If you're really comfortable flying and landing your trainer, you might skip the Avistar and go with a Big Stik 40. It will work well with the 46AX and is a more aerobatic plane than the trainer.

After writing that I will tell you that I have a Big Stik 60 and it is too responsive for me with the control throws set at the recommended amounts. I'd definitely recommend doing the first flight or two with a buddy box; or with a really good pilot standing by to help.